Let's calculate 9963 x 1800
9963 × 1800 = 1800 × (9963)
+ 1800 × 3 what gives us 5400
+ 1800 × 60 that results in 108000
+ 1800 × 900 which equals 1620000
+ 1800 × 9000 producing 16200000

= 17933400
